no good reason to prevent scopable literal "1st-party"

src/js/matrix.js

@@ -364,12 +364,12 @@ Matrix.prototype.evaluateCellZXY = function(srcHostname, desHostname, type) {
 
         // 1st-party specific-type cell: it's a special row, it exists only in
         // global scope.
-        r = this.evaluateCellZ('*', '1st-party', type);
+        r = this.evaluateCellZ(srcHostname, '1st-party', type);
         if ( r === 1 ) { return Matrix.RedIndirect; }
         if ( r === 2 ) { return Matrix.GreenIndirect; }
         // Do not override narrower rule
         if ( rl !==  2 ) {
-            rl = this.evaluateCellZ('*', '1st-party', '*');
+            rl = this.evaluateCellZ(srcHostname, '1st-party', '*');
             if ( rl === 1 ) { return Matrix.RedIndirect; }
         }
     }

src/js/messaging-handlers.js

@@ -120,7 +120,7 @@ var matrixSnapshot = function(details) {
 
     // These rows always exist
     r.rows['*'] = new RowSnapshot(r.scope, '*', '*');
-    r.rows['1st-party'] = new RowSnapshot('*', '1st-party', '1st-party');
+    r.rows['1st-party'] = new RowSnapshot(r.scope, '1st-party', '1st-party');
     r.rowCount += 1;
 
     var µmuri = µm.URI;

src/js/popup.js

@@ -345,10 +345,9 @@ function handleFilter(button, leaning) {
     var cell = button.ancestors('div.matCell');
     var type = cell.prop('reqType');
     var desHostname = cell.prop('hostname');
-    var srcHostname = desHostname !== '1st-party' ? matrixSnapshot.scope : '*';
     var request = {
         what: getCellAction(desHostname, type, leaning),
-        srcHostname: srcHostname,
+        srcHostname: matrixSnapshot.scope,
         desHostname: desHostname,
         type: type
     };